Michelle Williams and Mark Wahlberg, who co-star in the new Ridley Scott film about J Paul Getty.
Photograph: Buckner/Variety/Rex/Shutterstock

The actor Michelle Williams has welcomed co-star Mark Wahlberg’s decision to donate his $1.5m (£1.1m) pay cheque for reshoots of All The Money In The World to Time’s Up, thanking fellow actors who “stood by me and stood up for me”.

Wahlberg said on Saturday his donation to the initiative, which was set up to help fund accusers of sexual harassment and abuse, would be made in the name of Williams.

Mark Wahlberg donates $1.5m reward for film reshoots to Time's Up fund

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She was reportedly paid less than $1,000 for the reshoots, which were necessary after director Ridley Scott replaced Kevin Spacey in the lead role of J Paul Getty with Christopher Plummer less than two months before the film’s world premiere.

Spacey was the subject of a number of accusations of sexual misconduct, the first by actor Anthony Rapp, who alleged he was 14 when Spacey sexually harassed him.

Initially, Scott told the Guardian all actors involved did reshoots for free. Days later, anonymous sources told USA Today Wahlberg was paid $1.5m and Williams less than $1,000.

“I heard for the reshoot she got $80 a day compared to his MILLIONS,” the actor Jessica Chastain tweeted. “Would anyone like to clarify? I really hope that with everything coming to light, she was paid fairly. She’s a brilliant actress and is wonderful in the film.”

Wahlberg was the highest-paid male actor in 2017, according to Forbes. Williams was a founding member of Time’s Up.

In her statement, Williams praised the move by Wahlberg and the talent agency William Morris Endeavor (WME), which said it would donate an additional $500,000 to Time’s Up.

In a statement, Williams said: “Today isn’t about me. My fellow actresses stood by me and stood up for me, my activist friends taught me to use my voice and the most powerful men in charge, they listened and they acted.

“If we truly envision an equal world, it takes equal effort and sacrifice. Today is one of the most indelible days of my life because of Mark Wahlberg, WME and a community of women and men who share in this accomplishment. Anthony Rapp, for all the shoulders you stood on, now we stand on yours.”